EKHBX016BB3V3S
Indoor unit for air to water heat pump system
4PW62598-1 – 10.2010
Installation manual
22
Connect the indoor unit to a normal kWh rate power supply
If the benefit kWh rate power supply is of type 2 or 3 (power
interruption of main power supply to outdoor unit), the indoor unit
should be connected to a normal kWh rate power supply to allow
continuous indoor control and operation (e.g., pump).
Disconnect terminal X6YA from X6Y and connect X6YB to X6Y.
7.4.
Relocation of the digital controller
The digital controller is from factory located on the indoor unit. (See
"5.2. Main components" on page 10
for actual position). If required,
the digital controller can be repositioned.
Be aware that only 1 digital controller can be connected to the indoor
unit.
Wiring specifications
Mounting
1
Remove the front part of the digital controller.
Insert a slotted screwdriver into the slots (1)
in the rear part of the digital controller, and
remove the front part of the digital
controller.
2
Fasten the digital controller on a flat
surface.
3
Wire the unit.
1
Unit
2
Rear part of the digital controller
3
Front part of the digital controller
4
Wired from the rear
5
Wired from the top
6
Notch the part for the wiring to pass through with nippers,
etc.
INFORMATION
■
In case the benefit kWh rate power supply function is
enabled, the screed dry-out function can not be
enabled.
■
When connecting the equipment to a benefit kWh rate
power supply, change field setting [d-01]. When
benefit kWh rate power supply is of type 1 or indoor
unit is connected to a normal kWh rate power supply
(via 30-31, X2M) change both field settings [d-01] and
[d-00]. Refer to
"[d] Benefit kWh rate power supply/
Local shift value weather dependent" on page 37
■
If the benefit kWh rate power supply is of type 1 or
indoor unit is connected to a normal kWh rate power
supply, the unit will be forced to off. Controlling the
solar pump is still possible.
When the benefit kWh rate signal is sent, the
centralised control indicator
e
will flash to indicate
that the benefit kWh rate is active.
■
If the benefit kWh rate power supply is of type 2 or 3
and indoor unit is not connected to a normal kWh rate
power supply, then the heaters cannot be controlled.
This power supply interruption should not be longer
than 2 hours, otherwise the real time clock of the
controller will be reset.
During power supply interruption, the controller
display will be blank.
X2M
30 31
L N
BLK
WHT
X6YB
X6Y
X6YA
X2M
30 31
L N
BLK
WHT
X6YB
X6Y
X6YA
Wire specification
Value
Type
2 wire
Section
0.75-1.25 mm
2
Maximum length
500 m
NOTICE
The wiring for connection is not included.
NOTICE
The digital controller has to be mounted indoors.
NOTICE
Be careful not to distort the shape of the lower part of the
digital controller by over tightening the mounting screws.
1
P1
P2
1
1
6
2
3
4
5
P1
P2
16a
16
16a
16
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